Match Bonus, again

The rules contradict themselves; one line says it can be used for training games, then the next line says it cannot. What are all the games match bonus can be used? There are Champ games, tourney games, training, friendly, and now Guild challenge games. And can it be used both ways (challenging and defending) for each of these types of games? Please, a list would be great.
Championship either team could use MB
Guild challenges it will only take effect for the team playing the challenge
Training games you used to be able to but now you can't because of the number of complaints it got
and you also can't use MB in friendlies not that you'd want to as it means nothing.
Thanks Ashley

You just forgot about tournaments
In tournaments match bonus can be used by both the home and away team.
O so I did and yes you're right qBall
Ashley Longthorn :

Training games you used to be able to but now you can't because of the number of complaints it got


I'm guessing it's because the map "training" games affected ranking?
Good guess Ryan, it is indeed to give a ranking without any match bonus influence.
Thanks fellas.